Doping single wall carbon nanotubes with differently charged porphyrins

G. A. M. Sáfar; H. B. Ribeiro; C. Fantini; F. O. Plentz; A. P. Santos; G. DeFreitas-Silva; Y. M. Idemori

Doping single wall carbon nanotubes with differently charged porphyrins

Materials Science 2008-09-29 v1 Other Condensed Matter

Authors: G. A. M. Sáfar , H. B. Ribeiro , C. Fantini , F. O. Plentz , A. P. Santos , G. DeFreitas-Silva , Y. M. Idemori

Abstract

Photoluminescence (PL) measurements of porphyrin-doped single wall carbon nanotubes (SWNT) were studied in sodium dodecylbenzenesulfonate (NaDDBS) aqueous dispersions. The PL spectra were used to draw PL maps were the maxima corresponds to absorption-emission excitonic processes related to (E11, E22) first Van Hove singularities of the SWNT electronic structure. The influence of the net charge of the porphyrin was a determinant factor in the energy map maximum shifts (EMMS) compared to the energy map of a pristine NaDDBS/SWNT dispersion. A non-interacting porphyrin is used as a reference to discard the influence of the dielectric constant of the medium in the EMMS.

Keywords

doping in semiconductors carbon nanotubes optical absorption spectroscopy

Cite

@article{arxiv.0809.4498,
  title  = {Doping single wall carbon nanotubes with differently charged porphyrins},
  author = {G. A. M. Sáfar and H. B. Ribeiro and C. Fantini and F. O. Plentz and A. P. Santos and G. DeFreitas-Silva and Y. M. Idemori},
  journal= {arXiv preprint arXiv:0809.4498},
  year   = {2008}
}

Doping single wall carbon nanotubes with differently charged porphyrins

Abstract

Keywords

Cite

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